1 /*
2 * Copyright 2015-2020 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 #include <stdio.h>
11 #include <openssl/conf.h>
12 #include <openssl/ssl.h>
13 #include "ssl_local.h"
14 #include "internal/sslconf.h"
15
16 /* SSL library configuration module. */
17
SSL_add_ssl_module(void)18 void SSL_add_ssl_module(void)
19 {
20 /* Do nothing. This will be added automatically by libcrypto */
21 }
22
ssl_do_config(SSL * s,SSL_CTX * ctx,const char * name,int system)23 static int ssl_do_config(SSL *s, SSL_CTX *ctx, const char *name, int system)
24 {
25 SSL_CONF_CTX *cctx = NULL;
26 size_t i, idx, cmd_count;
27 int rv = 0;
28 unsigned int flags;
29 const SSL_METHOD *meth;
30 const SSL_CONF_CMD *cmds;
31 OSSL_LIB_CTX *prev_libctx = NULL;
32 OSSL_LIB_CTX *libctx = NULL;
33
34 if (s == NULL && ctx == NULL) {
35 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
36 goto err;
37 }
38
39 if (name == NULL && system)
40 name = "system_default";
41 if (!conf_ssl_name_find(name, &idx)) {
42 if (!system)
43 ERR_raise_data(ERR_LIB_SSL, SSL_R_INVALID_CONFIGURATION_NAME,
44 "name=%s", name);
45 goto err;
46 }
47 cmds = conf_ssl_get(idx, &name, &cmd_count);
48 cctx = SSL_CONF_CTX_new();
49 if (cctx == NULL)
50 goto err;
51 flags = SSL_CONF_FLAG_FILE;
52 if (!system)
53 flags |= SSL_CONF_FLAG_CERTIFICATE | SSL_CONF_FLAG_REQUIRE_PRIVATE;
54 if (s != NULL) {
55 meth = s->method;
56 SSL_CONF_CTX_set_ssl(cctx, s);
57 libctx = s->ctx->libctx;
58 } else {
59 meth = ctx->method;
60 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
61 libctx = ctx->libctx;
62 }
63 if (meth->ssl_accept != ssl_undefined_function)
64 flags |= SSL_CONF_FLAG_SERVER;
65 if (meth->ssl_connect != ssl_undefined_function)
66 flags |= SSL_CONF_FLAG_CLIENT;
67 SSL_CONF_CTX_set_flags(cctx, flags);
68 prev_libctx = OSSL_LIB_CTX_set0_default(libctx);
69 for (i = 0; i < cmd_count; i++) {
70 char *cmdstr, *arg;
71
72 conf_ssl_get_cmd(cmds, i, &cmdstr, &arg);
73 rv = SSL_CONF_cmd(cctx, cmdstr, arg);
74 if (rv <= 0) {
75 int errcode = rv == -2 ? SSL_R_UNKNOWN_COMMAND : SSL_R_BAD_VALUE;
76
77 ERR_raise_data(ERR_LIB_SSL, errcode,
78 "section=%s, cmd=%s, arg=%s", name, cmdstr, arg);
79 goto err;
80 }
81 }
82 rv = SSL_CONF_CTX_finish(cctx);
83 err:
84 OSSL_LIB_CTX_set0_default(prev_libctx);
85 SSL_CONF_CTX_free(cctx);
86 return rv <= 0 ? 0 : 1;
87 }
88
SSL_config(SSL * s,const char * name)89 int SSL_config(SSL *s, const char *name)
90 {
91 return ssl_do_config(s, NULL, name, 0);
92 }
93
SSL_CTX_config(SSL_CTX * ctx,const char * name)94 int SSL_CTX_config(SSL_CTX *ctx, const char *name)
95 {
96 return ssl_do_config(NULL, ctx, name, 0);
97 }
98
ssl_ctx_system_config(SSL_CTX * ctx)99 void ssl_ctx_system_config(SSL_CTX *ctx)
100 {
101 ssl_do_config(NULL, ctx, NULL, 1);
102 }
103